Card, picture, or sign exhibitor.



No. 73?,940. PATENTED SEPT. l, 1903.}

B. LBATHERBARROW. CARD, PIGTURE OB. SIGN EXHIBITOR.

APPLICATION FILED KAY 20, 1903.

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I PATENTED SEPT. 1; 1903.. J. B. LEATHERBARROW. Y CARD, PICTURE, 0R SIGNEXHIBITOR.

APPLICATION FILED MAY 20, 1903.

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PATENTED SEPT. 1, 1903. i J. B. LEATHERBARROW.

CARD, PIGTURR OR SIGN EXHIBITOR,

Aramommn mm MAY 20. 1903.

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UNITED STATES Patented September 1, 1903.

PATENT OFFICE.

JOSEPH B. LEATHERBARROW, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO DISPLAY MACHINE COMPANY, OF EAST ORANGE, NEWJERSEY, A CORPORATION OF NEW JERSEY.

CARD, PICTURE, OR SIGN EXHIBITOR.

SPECIFICATION forming part of Letters Patent N 0. 737,940, datedSeptember 1, 1903. Application filed May 20. 1903. Serial No. 157-949.(NomodeL) To all whom, it may concern:

Be it known that I, JOSEPH B. LEATHER- BARROW, a citizen of the UnitedStates, residing in the borough of Manhattan, in the city and State ofNew York, have invented certain new and useful Improvements in Card,Picture, or Sign Exhibitors, of which the following is a specification.

My invention relates to that class of appazo ratus designed for thedisplay of cards, pictures, signs, and the like by throwing the sameconsecutively on a screen; and. the invention consists in certaindetails of construction and combinations of parts, which will be moredefinitelypointed out in the claims, and which are designed to renderthe apparatus simple and perfect in operation.

In the accompanying drawings, Figure 1 is a front elevation of theapparatus, the motor being omitted. Fig. 2 is a similar view of part ofthe apparatus, shown in the position assumed at the moment of changingapicture. Fig. 3 is a sectional view showing the method ofattaching apicture to the displaying-wheel. Fig. 4 is a top view of the apparatus.Fig. 5 is a diagrammatic view of the electric circuit controlling thedisplaying-wheel. Fig. 6 is a top View illustrating a modified method ofmounting the plates or pictures on the disgo playing-wheel adapted tothe simultaneous exposure of the cards, pictures, 850., at two points.

The apparatus is designed for the display on a suitable screen (not hereillustrated) of cards, pictures, signs, and the like placed onphotographic plates 1. These plates are brought consecutively intoposition between the lens and the light of a magic lantern 2, andthereby displayed suitably enlarged upon the screen. It is importantthat the plate be held stationary while its card or picture is beingdisplayed, that it be quickly shifted to allow the following card orpicture to be displayed, and that while the change is being effected thelight shall be obscured and then quickly thrown on as soon as the nextsucceeding card or picture is in place. The plates 1, usually of glassand having the card, picture, or sign placed thereon photograph- 50ically, are mounted at equal distances apart on the periphery of a wheel3. The-means of attachment are shown in Figs. 1 and 3. For each plate 1I provide a basepiece 4, which may be of wood or other material andwhich is slotted at 5, as shown in Fig. 3, to receive the edge of theplate 1,which is then held in the slot by glue or otherwise. Thebase-piece 4 is fastened to the rim 6 of wheel 3 by means of a set-screw7, passing through a slot 3 (see Fig. 1) in the base-piece 4. In thisway the capacity for peripheral adjustment of the plates is provided, sothat they may be accurately positioned with respect to each other and tothe exposing-point.

The construction of the wheel 3 may be as shown, having the metallic rim6 shouldered at 6 to receive the base-pieces of the plates 1 andsupported on the hub 9 by the suspension-spokes 10. The hub 9 has,preferably, ball-bearing support on the axle 11, mounted in thestationary frame 12, the whole structure being by reason of itslightness and lack of friction adapted to move promptlyand with theleast exertion of power on the part of the driving mechanism and also tobe stopped quickly and without undue shock and Wear and tear of theapparatus.

Projecting laterally from the rim 6 of the wheel 3 are a series oflocking-pins 13, with which the jaw 14 of holding-dog 15, pivoted 8o at16 to the stationary support, engages to hold the wheel during theinterval of time while a picture is being displayed.

The motor 17 (merely indicated in Fig. 2 by its casing) has its shaft 18projecting under the wheel 3. It carries oppositely-projecting arms 19having rounded outer ends. It also carries two oppositely-arranged cams20, having the rounded face 21, the edge 22 concentric with the shaft18, and the steep drop 23. c The arms 19 engage by their rounded outerends with a pin 24. on the outer end of the dog 15 to unlock the wheeland with pins 13 on the rim of the wheel 3, propelling the wheel. Thecams 2O engage by their rounded 5 face 21 with an antifriction-roller 25on the lower end of a sliding bar 26, which may have a weight or spring27 to hold it normally in its lower position and which is guided by astrap 28 on a stationary part of the frame.

From the rounded face 21 of the cam 20 said antifriction-roller passesto the concentric portion 22 of the cam and thence tothe drop 23. Theupper end of the bar 26 is pivoted to the arm 29 on the shutter 30, saidarm being pivoted at 31 to a stationary part of the frame. When themotor is started in the manner to be presently described, the camsurface21, which is somewhat in advance of the arm 19, strikes theantifriction-roller 25, and so brings the shutter 30 down to obscure thelight. Immediately thereafter the arm 19 strikes the pin 24, unlockingthe dog from one of the pins 13, and at the same instant the arm 19strikes the next forward pin 13, as shown in Fig. 2, thus propelling thewheel to the next position. The face 22 of the cam holds the shutterclosed while the pictures are being changed, and the pin 13, which hasjust been released by the dog 15, holds that dog up until the said pin13 has passed beyond the end of the dog. At this point the dog dropsover the next succeeding pin 13, the roller drops into the radial part23 of the cam, and simultaneously the wheel is locked in position andthe shutter opened.

The pin 32 is for the purpose of holding the dog 15 from accidentaldropping and is fastened to the stationary part of the frame.

The motor 17 is preferably controlled so as to expose the cards,pictures, or the like for short period and at regular intervals. It isshown in Fig. 5 connected in circuit with a pair of contacts 33, whichare closed by projections 34., carried by a disk 35 on the seconds-arborof a clock 36. The electric circuit also includes a contact-arm 37,carried by the hour-hand, which sweeps over a contact-plate 38, so thatthe motor-circuit is closed only during such part of twenty-four hoursas may be desired. The current for the circuit may be derived from abattery 39 or other source. The clock employed may be electricallyoperated, current being derived from the same source as that employedfor the motor 17, or the clock may be of any other desired construction.

In Fig. 6 I have exhibited a method of arranging the plates on oppositesides of the wheel at a slight angle and in line with two separate magiclanterns, so as to expose the cards, pictures, and the like on twodifferent screens, which may, for example, be on two sides of a cornerbuilding where the apparatus is used for advertising purposes.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-- 1. In an apparatus forexhibiting cards, pictures, signs and the like, the combination of aplate-carrying device adapted to support a number of plates to beconsecutively exposed, a holding device for retaining the platecarryingdevice while a plate is being exposed, a shutter, a propelling-motor forthe platecarrying device, and means controlled thereby for releasingsaid holding device and operating said shutter, substantially as setforth.

2. In an apparatus of the character described, the combination of theplate-carrying wheel having locking-pins, a locking-dog adapted toengage said pins, a motor, andarms driven by said motor to unlock saiddog and engage said wheel for propelling it, substantially as set forth.

3. In an apparatus of the character described, the combination of theplate-carrying wheel having locking-pins, a locking-dog adapted toengage said pins, a motor, and arms driven by said motor to unlock saiddog and engage said wheel for propelling it, sub stantially as setforth.

4. In an apparatus of the character described, the combination of aplate-carrying wheel, a shutter, carrying and operating arms for saidshutter, a motor, its shaft having propelling-arms for said wheel andearns also operated by said shaft for actuating said shutter,substantially as set forth.

5. In an apparatus of the character described,the combination of theshutter, its carrying-arm and operating-bar,a propelling-motor havingoperati ve connection with the wheel and cams driven by said motor andhaving the faces as described for throwing the shutter into position toobscure a plate for holding it there while the plate is being shiftedand for allowing the shutter to be quickly withdrawn, substantially asset forth.

6. In an apparatus of the character described, the combination of theplate-carrying wheel 3, having locking and propelling pins 13, alocking-dog having a jaw to engage said pins, a motor havingoperating-arms adapted to engage said dog and said pins, the dog havinga surface adapted to ride on said pins while the wheel is being shifted,substantially as set forth.

7. In an apparatus of the character described, the combination of aclock mechanism, an electric circuit including a propellingmotor, andcontact devices controlled by said clock, a plate-carrying device, ashutter, and a locking device for said plate-carrying device andoperative connection from said motor to operate said shutter, unlocksaid locking device and propel the plate-carrying device, substantiallyas set forth.

8. In an apparatus for exhibiting cards, pictures, signs and the like,the combination of a plate-carrying device adapted to support a numberof plates so as to be consecutively exposed, a motor-driven axle,cam-surfaces and arms secured upon said axle for auto-' maticallyoperating the shutter and the intermittent movement of theplate-carrying device so as to keep the shutter closed during the turnof the latter, a pivoted dog for retaining the plate-carrying deviceduring the exposure of the plates, but unlocking said plate-carryingdevice through the action of said arms on the operating-shaft.

JOSEPH B. LEATHERBARROW.

Witnesses:

J. GREEN, WILLIAM PIERSON HAMMOND.

